RSS feed of PHP.net is not valid

Greetings. Applications based on Gecko engine can't use this feed because it contains undefinded entity. Look: XML Parsing Error: undefined entity Location: http://www.php.net/news.rss Line Number 198, Column 327: <description>It has been 10 years since Rasmus released the first version of PHP. To everyone that has helped to shape PHP into what it is today; from the people developing the core and extensions, documentors, script developers, bug reporters, beta testers, PHP application developers and even just people that are using PHP&mdash;Thank you!</description> Pointer of the XML parser is set to the ampersand of &mdash; entity. Feedvalidator has the same opinion: http://feedvalidator.org/check.cgi?url=http%3A%2F%2Fwww.php.net%2Fnews.rss Please, could you fix this? Thanks -jk-